CN101092137A - Control valve of brake - Google Patents
Control valve of brake Download PDFInfo
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- CN101092137A CN101092137A CN 200610052118 CN200610052118A CN101092137A CN 101092137 A CN101092137 A CN 101092137A CN 200610052118 CN200610052118 CN 200610052118 CN 200610052118 A CN200610052118 A CN 200610052118A CN 101092137 A CN101092137 A CN 101092137A
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- interface
- valve
- spool
- control cock
- valve body
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Abstract
The invention relates to control valve of braking device that includes valve body, valve core and shuttle valve. The feature is that the valve core adopts two position and tee coupling valve core. One end of valve core connects to the output end of shuttle valve. The input end of shuttle interface B and C connect to hydraulic system pressure output end. The other end of spring cavity of valve core connects to oil tank. And the input interface of control valve P connects to low voltage constant pressure resource. The cavity of valve core connects to output interface A of control valve through output end. The output interface A connects to brake. Cavity of valve core connects to interface L, which connects to oil tank, through return check valve and control valve. The invention has the advantages of simple and small volume, etc.
Description
Technical field
The present invention relates to a kind of control cock of drg.
Background technology
The winch in the present domestic engineering mechanical device or the control of winch hydraulic brake adopt system pressure to control basically, see Fig. 1,2, because the influence of system back pressure, braking force weakens when making system's meta, particularly the high rotating speed of system's meta driving engine the time, system back pressure raises, cause winch or winch drg to be opened and weight is glided, and because system high pressure is at 25～28Mpa, cause the brake plunger leakage of oil easily, along with the construction machinery hydraulic system pressure rating progressively improves, and winch or winch drg withstand voltage generally all be less than 20Mpa, also need to design the drg control cock that makes new advances and solve this technical matters.
The patent No. is 01244459.6 Chinese patent " the compensation drg control cock of hoisting crane back pressure ", this control cock has a valve body, the vertical reducing valve that connects in valve body upper surface, the reducing valve both sides respectively connect a pilot operated directional control valve, the vertical two plug-in shuttle valves that connect in the bottom surface of valve body, eliminate the drg out-of-control phenomenon that system back pressure is brought owing to adopted the compensation drg control cock of back pressure, change the high pressure braking and be the low pressure braking, avoided drg to produce leakage of oil and oil impregnate because of pressure is high, it no doubt has describes such progressive meaning, but, owing to adopted two cover pilot operated directional control valves, a shuttle valve and a reducing valve certainly will cause the structure more complicated, and valve volume is not easy to dwindle, manufacturing cost requires further improvement than higher.
Summary of the invention
Technical matters to be solved by this invention provides a kind of control cock of simple and practical, cost is low, volume is little drg.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of control cock of drg, it includes valve body, with the spool and the shuttle valve that are installed in the valve body, it is characterized in that spool is to adopt the two-position three way spool, the one end process system input damping of spool removes to connect the mouth of shuttle valve, two input end interface B of shuttle valve remove to be connected the hydraulic system pressure mouth respectively with interface C, the other end spring cavity of spool is through valve core movement in parallel contend with damping and repairing check valve connected tank, the input interface P of control cock connects low pressure constant voltage potential source, the damping of spool cavity process mouth meets the output interface A of control cock, output interface A removes to connect drg, the spool cavity is connected with the interface L of control cock through return check valve, and interface L removes to connect fuel tank.
As improvement, above-mentioned shuttle valve is fastened on the left surface of valve body, the input end interface B of shuttle valve and input end interface C are separately positioned on the position, top and bottom of shuttle valve, be built-in with filter screen in the shuttle valve mouth cavity, it promptly makes things convenient for the installation of shuttle valve to be connected with interface, simultaneously, also make pilot operated valve device have the filter cleaning effect.
Further improve, described valve body is supported between spool and the set screw spring in the spool right-hand member spring cavity set screw that is threaded, it by set screw can setting spring pressure, be more prone to control the quality specification unification of product.
Compared with prior art, the invention has the advantages that: the structure that adopts hydraulic control two-position three way spool to combine with shuttle valve, structure is simpler, a two-position three way spool and shuttle valve have been reduced, reduced cost, assembling is produced and also is more prone to, volume also can further dwindle, also can overcome the system back pressure drg cause that raises and open phenomenon, and can come the control brake device by a low pressure constant pressure source (being generally less than 20Mpa), reduced internal leak, particularly the higher-pressure region of the pilot operated valve device of drg is sealed by the meta of its spool fully, and its two ends all are low pressure, make himself oil circuit isolate the high-voltage influence in inside and outside automatically, even internal leak is arranged, can not exert an influence to braking yet, time braking is closed more reliable thereby make system's meta, when meta, because A is interfaced to the oil return function of L interface, and the fluid of winch or winch brake piston dead space is flowed, and plays system's self-cleaning action.
Description of drawings
Fig. 1 is one of traditional braking device hydraulic schematic diagram;
Fig. 2 is one of traditional braking device hydraulic schematic diagram;
Fig. 3 is the control cock hydraulic schematic diagram (mode of operation) of drg of the present invention;
Fig. 4 is the control cock hydraulic schematic diagram (meta state) of drg of the present invention;
Fig. 5 is the control cock constructional drawing of drg of the present invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As Fig. 3-5 signal, the control cock of this kind drg, it includes valve body 11, with the spool 1 and the shuttle valve 3 that are installed in the valve body 11, wherein spool 1 is to adopt the two-position three way spool, one end of spool 1 removes to connect the mouth of shuttle valve 3 through system input damping 4, two input ends of shuttle valve 3 are that control cock interface B removes to be connected the hydraulic system pressure mouth respectively with interface C, the other end spring cavity 12 of spool 1 is through valve core movement in parallel contend with damping 9 and repairing check valve 8 connected tanks, the input interface P of control cock connects low pressure constant voltage potential source, the spool cavity meets the output interface A of control cock through mouth damping 5, output interface A removes to connect drg, the spool cavity is connected with the interface L of control cock through return check valve 10, and interface L removes to connect fuel tank.
Its principle of work is such, and at first, when system connect control cock interface B and C pressure smaller or equal to spring force, interface A was communicated with interface L, and the interface P that connects the low pressure constant pressure source is sealed by spool 1, and drg is in closed condition at this moment; Then, when system pressure is imported by interface B or C, when pressure is higher than the spring pressure of setting by set screw 7, spool 1 is pushed to the right, at this moment, under the effect of input end damping 4, spool 1 easy motion, and repairing this moment check valve 8 is closed, spring cavity in-to-in hydraulic oil can only lead to oil return by the damping 9 that contends with, therefore, and when spool 1 is opened, the damping at its two ends acts on simultaneously, and that has both realized spool opens function slowly; Rising along with system pressure, spool 1 complete compression spring, interface A oil pocket and interface L are closed fully, simultaneously, the constant oil sources of interface P is communicated with fully with interface A, constant oil sources is steadily opened drg by mouth damping 5, and is last, when system pressure weakens to the spring pressure less than setting through interface B or C, spool 1 begins to close, repairing this moment check valve 8 opens and to the spring cavity repairing, the damping 9 that contends with of spring cavity is ineffective, and spool is closed, have only input end damping 4 to work this moment, therefore spool is realized quick closedown, and interface P and interface A are cut off, and the pressure oil of interface A is steadily closed drg by mouth damping 5.Hydraulic control mouth filter screen makes the cleanliness of hydraulic oil that enters spool, prevent the card valve, the effect of shuttle valve is a selective system pressure, set screw 7 is owing to the hydraulic control spool is opened in the influence of back pressure when adjusting spring force with assurance system meta, thereby cause the meta drg to be opened, repairing check valve 8 prevents that spring cavity from producing vacuum when spool is replied.
Claims (5)
1. the control cock of a drg, it includes valve body, with the spool and the shuttle valve that are installed in the valve body, it is characterized in that spool is to adopt the two-position three way spool, the one end process system input damping of spool removes to connect the mouth of shuttle valve, two input end interface B of shuttle valve remove to be connected the hydraulic system pressure mouth respectively with interface C, the other end spring cavity of spool is through valve core movement in parallel contend with damping and repairing check valve connected tank, the input interface P of control cock connects low pressure constant voltage potential source, the damping of spool cavity process mouth meets the output interface A of control cock, output interface A removes to connect drg, the spool cavity is connected with the interface L of control cock through return check valve, and interface L removes to connect fuel tank.
2. the control cock of drg according to claim 1, it is characterized in that described shuttle valve is fastened on the left surface of valve body, the input end interface B of shuttle valve and input end interface C are separately positioned on the position, top and bottom of shuttle valve, are built-in with filter screen in the shuttle valve mouth cavity.
3. the control cock of drg according to claim 1 and 2 is characterized in that described valve body in the spool right-hand member spring cavity set screw that is threaded, is supported between spool and the set screw spring.
4. the control cock of drg according to claim 3 is characterized in that described set screw is lined with seal ring in the trim ring both sides, and compresses with nut.
5. the control cock of drg according to claim 3 is characterized in that described input interface P on valve body, and interface L is below valve body, and interface A is in the front of valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100521184A CN100493969C (en) | 2006-06-23 | 2006-06-23 | brake control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100521184A CN100493969C (en) | 2006-06-23 | 2006-06-23 | brake control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092137A true CN101092137A (en) | 2007-12-26 |
| CN100493969C CN100493969C (en) | 2009-06-03 |
Family
ID=38990629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100521184A Expired - Fee Related CN100493969C (en) | 2006-06-23 | 2006-06-23 | brake control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100493969C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629588B (en) * | 2009-06-01 | 2011-11-09 | 中国航空工业集团公司西安飞机设计研究所 | Liquid control valve with double control ports |
| CN102785656A (en) * | 2012-09-05 | 2012-11-21 | 湖南明鼎科技有限公司 | Air valve for use in track traction driver brake controller system and control method of air valve |
| CN102889398A (en) * | 2012-10-12 | 2013-01-23 | 常德中联重科液压有限公司 | Shuttle valve, shuttle valve driving type device, winding drum brake cylinder control loop and crane |
| CN101922477B (en) * | 2009-06-09 | 2013-02-06 | 上海立新液压有限公司 | Pressure-compensated valve |
| CN103641023A (en) * | 2013-12-17 | 2014-03-19 | 徐州重型机械有限公司 | Control valve, hydraulic control system of winch brake and crane |
| CN106015147A (en) * | 2016-07-28 | 2016-10-12 | 安徽环球传动科技有限公司 | Shuttle valve with middle position unloading function and braking system for hydraulic motor drive |
| CN108050121A (en) * | 2018-01-19 | 2018-05-18 | 邵立坤 | A kind of hydraulic control system of plug-in control valve and hoist brake |
| CN108061070A (en) * | 2017-12-19 | 2018-05-22 | 宁波文泽机电技术开发有限公司 | A kind of pressure-control valve |
| CN108266420A (en) * | 2018-01-19 | 2018-07-10 | 邵立坤 | Plug-in brake control valve |
-
2006
- 2006-06-23 CN CNB2006100521184A patent/CN100493969C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629588B (en) * | 2009-06-01 | 2011-11-09 | 中国航空工业集团公司西安飞机设计研究所 | Liquid control valve with double control ports |
| CN101922477B (en) * | 2009-06-09 | 2013-02-06 | 上海立新液压有限公司 | Pressure-compensated valve |
| CN102785656A (en) * | 2012-09-05 | 2012-11-21 | 湖南明鼎科技有限公司 | Air valve for use in track traction driver brake controller system and control method of air valve |
| CN102889398A (en) * | 2012-10-12 | 2013-01-23 | 常德中联重科液压有限公司 | Shuttle valve, shuttle valve driving type device, winding drum brake cylinder control loop and crane |
| CN103641023A (en) * | 2013-12-17 | 2014-03-19 | 徐州重型机械有限公司 | Control valve, hydraulic control system of winch brake and crane |
| CN103641023B (en) * | 2013-12-17 | 2016-04-27 | 徐州重型机械有限公司 | The hydraulic control system of control cock and hoist brake, hoisting crane |
| CN106015147A (en) * | 2016-07-28 | 2016-10-12 | 安徽环球传动科技有限公司 | Shuttle valve with middle position unloading function and braking system for hydraulic motor drive |
| CN106015147B (en) * | 2016-07-28 | 2017-12-15 | 安徽环球传动科技有限公司 | A kind of shuttle valve with middle position unloading function and fluid motor-driven brakes |
| CN108061070A (en) * | 2017-12-19 | 2018-05-22 | 宁波文泽机电技术开发有限公司 | A kind of pressure-control valve |
| CN108050121A (en) * | 2018-01-19 | 2018-05-18 | 邵立坤 | A kind of hydraulic control system of plug-in control valve and hoist brake |
| CN108266420A (en) * | 2018-01-19 | 2018-07-10 | 邵立坤 | Plug-in brake control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100493969C (en) | 2009-06-03 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Jiangbei Yuzhou Hydraulic Equipment Factory Assignor: Lu Yongsong Contract record no.: 2011330000288 Denomination of invention: Control valve of brake Granted publication date: 20090603 License type: Exclusive License Open date: 20071226 Record date: 20110415 |
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| ASS | Succession or assignment of patent right |
Owner name: NINGBO JIANGBEI YUZHOU HYDRAULIC EQUIPMENT FACTORY Free format text: FORMER OWNER: LU YONGSONG Effective date: 20110708 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 315211 NINGBO YUZHOU HYDRAULIC EQUIPMENT FACTORY, KONGPULI, JIANGBEI, NINGBO CITY, ZHEJIANG PROVINCE TO: 315021 NO. 98, XINGYONG ROAD, JIANGBEI DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110708 Address after: Jiangbei District in Zhejiang province 315021 Hing Ningbo Yonglu No. 98 Patentee after: Ningbo Jiangbei Yuzhou Hydraulic Equipment Factory Address before: 315211 Ningbo Jiangbei Zhejiang Kongura Rika Ningbo Jiangbei hydraulic equipment factory Patentee before: Lu Yongsong |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20180623 |
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| CF01 | Termination of patent right due to non-payment of annual fee |